Here’s why EPIC wins either way.
If they get their way with the lawsuit, they will force app store to either reduce royalty rate or allow side loading or both.
If not, then EPIC should be prepared to fully embrace browser gaming, because unreal engine is webassembly and webgl ready.
I believe webassembly+webgl is their backup if they get kicked out of app stores forever.
With Epic’s clout and the games they have, it’s possible for them to lead the way to webassembly/html5 gaming that would obliterate all the app stores eventually and I believe they know that.
Almost all existing browsers out there are webassembly ready (even safari webkit) and if APPLE cripples the webkit engine to prevent this from happening, more grounds for monopoly lawsuit to an existing rule which only webkit rendering engine can be used on IOS browsers.